var crypto = require('crypto');


exports.md5 = function (str) {
    var md5sum = crypto.createHash('md5');
    md5sum.update(str);
    str = md5sum.digest('hex');
    return str;
};


exports.uuid = function () {
    var guid = "";
    for (var i = 1; i <= 32; i++){
        var n = Math.floor(Math.random()*16.0).toString(16);
        guid +=   n;
        // if((i==8)||(i==12)||(i==16)||(i==20))
        //     guid += "-";
    }
    return guid;
};